I did a search on the internet and found this thread. My hair has been turning grey since my last year in high school. I have been dying my hair about 4-5years now but stopped during my pregnancies (2). I have been plucking out the hairs instead and while doing so recently, I noticed one of the hairs pulled out was dark at the root. Probably about 3-4cm, but definitely dark brown where as the rest of the strand was grey and a coppery brown shade. My hair doesn't stay dark brown when dyed, the colour washes out eventually even though I use permanent hair dye. I have been worried it is the sign of major health problems :( It was not a once off as I have found several more strands since, hence my looking for answers. I do not get much sun as I am somewhat anti-social and dislike leaving my home, even to go outside. My sister calls me a hermit. I have found other people who have had the same experience with the grey to dark hairs and just wish I knew what it was all about...and how to perpetuate the phenomenon as I truly dislike being noticeably grey at 31. Any more info or ideas well received and appreciated :)